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<head>
    <meta charset="UTF-8">
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    <title>Document</title>
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<body>
<script>
    // 用于获取对象自身所有的属性
    var obj = {
        id: 1,
        pname: '小米',
        price: 1999,
        num: 2000
    };
    var arr = Object.keys(obj);
    console.log(arr);
    arr.forEach(function (value) {
        console.log(value);

    })
</script>
</body>

</html>
